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Retractable wheel assembly

US-7503439-B2

Abstract

A retractable wheel assembly ( 110 ) for a carrier ( 100 ) is disclosed wherein the wheels ( 120 ) are rotatably mounted in cowls ( 130 ), which are pivotably disposed in wheel wells ( 116 L, 116 R) on a housing. The cowls are connected with a cowl axle assembly ( 140 ) that includes a coil spring, preferably a constant force spring ( 150 ) that biases the cowls towards a retracted position. The constant force spring is connected to a retractable handle ( 104 ), preferably with a spring engagement member ( 160 ), such that extending the retractable handle will bias the cowls towards an extended position, wherein the wheels extend out of the wheel wells for use.

Patent figures（8）

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Source status & events

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